High frequency plasma ignition device
a plasma ignition and high frequency technology, applied in the direction of spark plugs, machines/engines, mechanical equipment, etc., can solve the problems of non-homogeneous mixtures in the combustion chamber imposing more stringent requirements, fluctuations of any kind reducing for example the standard of ignition and hence the efficiency of the entire engine, and disrupting the effect of mixture creation
Active Publication Date: 2017-04-11
ROSENBERGER HOCHFREQUENZTECHNIK GMBH & CO KG
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Benefits of technology
[0005]Bearing in mind the problems and deficiencies of the prior art, it is therefore an object of the present invention to improve a high-frequency ignition device to the effect that a maximum energy input is easily achieved to ignite the plasma, and into the plasma when ignited, in spite of different impedances in the space occupied by the plasma on the one hand before the ignition of the plasma and on the other hand thereafter.
Problems solved by technology
However, the non-homogeneous mixture in the combustion chamber imposes more stringent requirements for the ignition process used in respect of reliable ignition at the appropriate point in time.
Fluctuations of any kind reduce for example the standard of the ignition and hence the efficiency of the entire engine.
On the one hand the position of the ignitable mixture may vary slightly and on the other the hooked electrode of a spark plug may have a disruptive effect on the creation of the mixture.
Method used
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[0020]In describing the preferred embodiment of the present invention, reference will be made herein to FIGS. 1-7 of the drawings in which like numerals refer to like features of the invention.
[0021]The present invention comprises a resonant series circuit which has an inductive portion or component(s) and a capacitive portion or component(s) connected in series, and a high-frequency generator having a first electrical terminal and a second electrical terminal for the resonant excitation of the resonant series circuit, a first electrical contact point being provided at which one end of the capacitive portion and one end of the inductive portion are connected together electrically, the capacitive portion having a second electrical contact point at an end which is remote from the first contact point and the inductive portion having a third electrical contact point at an end which is remote from the first contact point, an electrical connecting device being provided which connects the...
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A high frequency plasma ignition device for the ignition of a fuel / air mixture in a combustion chamber of an internal combustion engine, having a series resonant circuit of an electric inductor and an electric capacitor connected in series, and a high frequency generator with a first electrical terminal and a second electrical terminal for the resonant excitation of the series resonant circuit, a first electrical contact point being provided in which one end of the capacitor and one end of the inductor are connected to one another electrically. An electrical connecting device connects the high-frequency generator to the inductor and to the capacitor such that an output signal of the high-frequency generator is applied to the series resonant circuit. An electric voltage is applied across the capacitor for igniting a plasma between free ends of a first and second electrode. An electric voltage is further applied to maintain the plasma after ignition.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a high-frequency plasma ignition device, in particular for an internal combustion engine and in particular for the ignition of a fuel / air mixture in a combustion chamber of an internal combustion engine.[0003]2. Description of Related Art[0004]Because of the possibility of producing a stratified charge in the combustion chamber, what are referred to as direct fuel injection spark-ignition processes have great potential with regard to reducing consumption. However, the non-homogeneous mixture in the combustion chamber imposes more stringent requirements for the ignition process used in respect of reliable ignition at the appropriate point in time. Fluctuations of any kind reduce for example the standard of the ignition and hence the efficiency of the entire engine. On the one hand the position of the ignitable mixture may vary slightly and on the other the hooked electrode of a spark plug...
Claims
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IPC IPC(8): F02P9/00F02P3/01F02P23/04H01T13/50
CPCF02P9/007F02P3/01F02P23/04F02P23/045H01T13/50H01T2/02H01T13/00Y02T10/40
Inventor ARMBRECHT, GUNNARWOLLITZER, MICHAELSCHMID, THOMAS
Owner ROSENBERGER HOCHFREQUENZTECHNIK GMBH & CO KG